Basiacally just what the topic says. I'm playing on medivh, and it seems it hasn't been added to the loot tables since no one has seen a single card above 4 despite the server being 2months ish.
And since these 2 server almost are a copy'n paste Id assume if you, with 10x population, havnt seen it , we will never
Yeah buddy, I had every card but 7th on Outland. Spent total of 4k gold on them and when I was finally about to get the 7th card they updated marketplace with a 19 coins trinket which you could buy for 900 gold :)